Die-maker&#39;s clearance-gage.



APPLICATION FILED AUG. 1, 1912.

Patented May 6, 1913.

GUSTAF ROSEN, or BUFFALO, NEW YORK.

DIE-MAKERs CLEARANCE-GAGE.

j specification of Letters Patent.

To all whom t may cova/cern y Y Beit known that I, GUsTAr RosN, a citizen of-the 'United States,`residing at Buf-' each of which was provided with a stock and "gages being arranged at different angles a blade fixed on the'stock at a definite angle relatively thereto, the blades of the several so as to permit a selection of the proper Y gage for use in making die with a clearance in its bore-corresponding to the 'particularangle. desired-J Such means of gaging theclearance of a die are unsatisfactory inasmuch as this necessitates the employment of a plurality of tools which is not only expensive but also necessitates making a selection of the proper tool, to say` nothingv about'the care required to keep the tools together.

It is the object of this inventionto pro-- vide a single tool of this character having a stock and bladewhich can be assembled in different fixed relations to each other at the various angles in which such a tool is commonly used for producing the various clearances or bevels in the bore of the die, rela` tively to the face thereof. l

In theaccompanying drawings: Figure l is a fragmentary vertical section of a dieA showing my improved clearance gage applied thereto for 4determining the angle of the die opening relatively to the face thereof. Fig. 2 is a horizontal section of the gage, taken in line Q-2, Fig..1 and looking upwardly. i

Si ilar Vcharacters of reference indicate corresponding parts in bothviews.

1/ represents a die having a flat upper face 2 .upon which a sheet of metal or other material to b e punched'is placed and an opening 3A through which that part of the blank which is removed by thev punch is vdischarged downwardly. The' corner 4t at the upper 'out requiring resharpening.

end ofthe opening and the upper face-j of the`die constitutes the shearing edge of the die withfwhich the punch coperates for removing a part or pieceofthe material from the blank or stock which is being opferated upon. The opening or bore of the die .usually flares or enlarges downwardly from the upper side of the dieto the` lower side thereof in order to permit the punchingvor `waste which is removed from the blank by the punch to pass freely. down-- ward through, the die and reduce the fric-v tional cntact of the same for avoiding unnecessary wear thereof and also to reduce the 'amount of power for operating the press. When a` comparatively large number of pieces is to be produced from a,die the angle of theclearance or downward flare of' the die opening is comparatively small inasmuch as in such cases 'the upper face of the die' must be ground down. in order to restore the cutting edge of the die when the same becomes worn and itis therefore necessary to have theclearance of the die openingv as small as possible in order not to unduly vary the size of theV die opening and the product of the same. lVhen, 'however, only a comparatively small numberv of pieces is to be produced from the die frequent dressing or `facing' of the same is not required for keeping the same sharp because the angle of the clearance or downward flare of its opening may be comparatively great 'inasmuch as the die will produce all the pieces that are necessary with- In order to enable the die maker to expeditiously and reliably obtain the proper angle or clearance in the opening'o-f the die in accordance with the work which is required a tool' is provided'which embodies my invention and .whichis constructed as follows 5 represents a stock or body which is preferably constructed in the form of a Hat bar of metal, such as steel, and which is provided with a plurality of transverse seats 6, 7 8,

gles relatively to each other 'and to the length of the stock. Although the number of these seats may vary, siX of them are represented `in the drawings, and the same are arranged in ,two series or groups on opposite flat sides of the stock, three in each seriesv or group. Each of these seats is preferably of rectangularI form in cross secti'n so as to present square' corners at its oppo- Patented May 6, 1913.- Appiication led August 1, 1912. Serial No. 712,703-,

v9, 10, 11 which are arranged at different any 'site lngitudinai: 'parallel sides. Although the angles at which these seats are arranged relatively to each other` and to the length of the stock may be varied I prefer to constructv the central one 7 on one slde vof the stock at an angle of 90. degrees or at right ang-les to the length of the stockwhile the remaining seats are arranged at one-half degree, one degree, one and. one-half degrees, two' degrees vand three degrees relatively to a line perpendicular to the length of thestop.

clamping head, preferably of cylindrical/ 12 represents a blade which is also preferably constructed ofI metal and -of rectangular form in cross section. This blade is engaged with one or the other of the seats of the stock so as to form a'square there# with. When the blade engages one of the seats of the 'stock it is held against displacement lengthwise of the stock by'reason of the square'corners of the. blade engaging with the square corners of the seat on the stock.

'In using the tool the stock vis placed'withl its lower edge upon the face of the die while one end lof the blade' projects downwardly` through the opening' thereof in which ,position of the parts the bore Aor w-all 'of the opening may be gaged for determining the angle: at which, the same should be finished iny accordance with the character of the work to.`be produced on the die. By shifting the blade from one seat" to another in accordance with the angle-of clearance or flare desired in the openingofthe diethe same tool lmay be usedfor thevarious clearances which are likelytoI be employed in a variety of dies.

Various' means may be employed for detachably connecting the stock and blade in the various positions in which the same may be assembled but those shown in the ldrawings are suit-able and are constructed as follows: 13 represents transverse clamping openings preferably of cylindrical form, associated with the grooved seats, one of such openings being employed for every two seats which are formed on opposite sides Aof the stock ,and each opening terminatingat its opposite ends in the corresponding seats on opposite sides ofthe stock. 14 represents a form, adapted to be arranged in o ne of the clamping openings and provided on one side with a jaw or groove 15 which is' adapted to receive one edge of the blade. .At one end of the clamping head the same is,provided with a screw shank 16 upon which is mounted a thumb screw nut 17. 18 represents a washer arranged on the screw shank and engaging with the fiat side of the stock opposite to the side which is engaged by l the' blade. -19 is a spring interposed between the washer andthe thumb screw nut.

When assembling the stock and blade the clamping head is -`inserted in one of the clamping openings with its groove or jaw registering with1the respective seatof the stock which 'has been. selected after which the blade is inserted in said seat of the stock land the jaw of the lclamping head and then the thumb screw is tightened, thereby 'sen curely 'drawing the blade and stock together and holding thesame reliably in position i relatively to each other at a definite angle. While thus assembled the tool may ybe freely .used lfor gaging the clearance or flare of the die ,opening without liability of. the stock and blade becoming shifted outvof place or `disarranged. The blade can be as readily shifted from one seat to another. on the `stock and used with'greater facility and accuracy than ispossible'when a plurality of gages are employed or when the gage is of such a construction't'hat the blade is liable to be displaced relatively to the stock while 1n use.

AThe side ofthe blade is preferably gradu ated for linear measurement as shown in Fig. 1 so thatby placing the same in the central right angle seat 7- of the stockthis tool may be alsoused as a depth gage in making dies las well as a clearance gage by shifting the blade to those seats which are arranged at' various angles relatively to the length of the stock and the ,right angle seat.

'. I claim as'my'invention:

' GUSTAF ROSN. Witnesses:

' IHno. L. Pori', ANNA HEIGIs. 

